Today I introduced the statistical technique of the analysis of variance (ANOVA). ANOVA concerns the measurement of the sources of variability in a study where there are two or more groups of observations of a quantitative variable. We discussed the concepts of between-groups and within-groups variability, and the measurement of each using mean squares.
Read: 14.1, 14.2 (skip the section titled “ANOVA and Regression” starting on page 706), 14.3 (skip the section titled “Regression Models with Indicator Variables for Two-Way ANOVA” starting on page 715).
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